Unit 6.3 Lessons 7-13 Review

the process in which a liquid turns into a gas

• condensation

• evaporation

• freezing

• melting

Answer explanation

Evaporation occurs when a liquid turns into a gas.

Tags

NGSS.MS-PS1-4

the process in which a gas turns into a liquid

• condensation

• evaporation

• freezing

• melting

Answer explanation

Condensation occurs when a gas turns into a liquid.

Tags

NGSS.MS-PS1-4

a type of heat transfer in which the energy source heats an object without direct contact

• conduction

• convection

• radiation

Answer explanation

Radiation occurs when energy is transferred without direct contact. The Sun heats the Earth through radiation.

a type of heat transfer in which the energy is transferred between objects when they touch, collide, or are in contact with each other

• conduction

• convection

• radiation

Answer explanation

Conduction is type of heat transfer that occurs through direct contact. When particles transfer energy when they collide, conduction is happening.

a type of heat transfer which occurs when hot fluids rise and cold fluids sink

• conduction

• convection

• radiation

The Sun heats the ground through what type of heat transfer?

(Use Jamboard Frames 17-20, if necessary.)

• conduction

• convection

• radiation

Answer explanation

The Sun heats the ground through solar radiation.

When air particles above the ground collide with the warmer solid particles in the ground, the ground particles transfer energy to the air particles through which type of heat transfer? (Use Jamboard Frames 17-20, if necessary.)

• conduction

• convection

• radiation

Answer explanation

When air particles above the ground collide with the warmer solid particles in the ground, the ground particles transfer energy to the air particles through conduction.

Tags

NGSS.MS-PS1-4

What happens to warm air?

(Use Jamboard Frames 17-20, if necessary.)

• It rises.

• It floats in place.

• It sinks.

Answer explanation

Warm air rises. As air particles are heated, they move faster and farther apart, taking up more space. The parcel of air becomes less dense and rises through cooler surrounding air.

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS2-6

Why does warm air rise?

(Use Jamboard Frames 17-20, if necessary.)

• It rises because it is more dense than the surrounding air.

• It rises because it is the same density as the surrounding air.

• It rises because it is less dense than the surrounding air.

Answer explanation

Warm air rises because it is less dense than the air around it. As air particles are heated, they move faster and farther apart, taking up more space. The parcel of air becomes less dense and rises through cooler surrounding air.

What happens to air molecules when they are heated that causes a parcel of air to become less dense?

(Use Jamboard Frames 17-20, if necessary.)

• The air molecules move slower and closer together.

• The air molecules move faster and farther apart.

• The air molecules remain at the same speed and distance from each other.

Answer explanation

Warm air rises. As air particles are heated, they move faster and farther apart, taking up more space. The parcel of air becomes less dense and rises through cooler surrounding air.

Tags

NGSS.MS-PS1-4